当 AspectJ ExpressionPointcutAdvisor 以编程方式创建时不会触发切入点

Question

我正在根据应用程序属性文件中存在的切入点数量创建 AspectJExpressionPointcutAdvisor。它创建的对象没有错误，但未触发切入点。

注意：需要根据属性文件中切入点表达式的数量动态创建bean（可变）。

应用程序属性文件

pointcut.expression.projectUpdate[0]= execution(* com.abc.app.service.impl.TestServiceImpl.updateProjectDetails(..))
pointcut.expression.projectUpdate[1]= execution(* com.abc.app.service.impl.TestServiceImpl.cancelProject(..))
pointcut.expression.projectUpdate[2]= execution(* com.abc.app.service.impl.TestCSATRatingServiceImpl.saveRatingDetails(..))

TestConfig.class

@Configuration
public class TestConfig implements BeanFactoryAware {
    
    @Autowired
    private PointcutExprProperties pcExprProp;
    
    @Autowired(required=false)
    private ProjectUpdateAspect projectUpdateAdvice;

     private BeanFactory beanFactory;
    
    @Override
    public void setBeanFactory(BeanFactory beanFactory) {
        this.beanFactory = beanFactory;
    }
    
    @PostConstruct
    public void configure() {
        ConfigurableBeanFactory configurableBeanFactory = (ConfigurableBeanFactory) beanFactory;
        int i=1;
        for(String pointCut : pcExprProp.getProjectUpdate()) {
            AspectJExpressionPointcutAdvisor projectUpdateAdvisor = new AspectJExpressionPointcutAdvisor();
            projectUpdateAdvisor.setExpression(pointCut);
            projectUpdateAdvisor.setAdvice(projectUpdateAdvice);
            configurableBeanFactory.registerSingleton("beanName_"+i, projectUpdateAdvisor);
            i++;
        }
    }
}

ProjectUpdateAspect.class

@Component
@Aspect
public class ProjectUpdateAspect implements AfterReturningAdvice {

    private static final Logger log = LoggerFactory.getLogger(ProjectUpdateAspect.class);

    @Override
    public void afterReturning(Object returnValue, Method method, Object[] args, Object target) throws Throwable {
        try {
            // some thing
        }catch (Exception exception) {
            log.error("Error while processing ProjectUpdateAspect",exception);
        }

    }
}

PointcutExprProperties

@Configuration
@ConfigurationProperties(prefix = "pointcut.expression")
@Validated
public class PointcutExprProperties {

    @NotNull
    private List<String> projectCreate;
    
    @NotNull
    private List<String> projectUpdate;

    public List<String> getProjectCreate() {
        return projectCreate;
    }

    public void setProjectCreate(List<String> projectCreate) {
        this.projectCreate = projectCreate;
    }

    public List<String> getProjectUpdate() {
        return projectUpdate;
    }

    public void setProjectUpdate(List<String> projectUpdate) {
        this.projectUpdate = projectUpdate;
    }
}

请建议我如何解决这个问题。

Answer 1

我建议你这样做：

您没有将您的“方面”定义为 @Component @Aspect，而是使其实现 MethodInterceptor。
您使用属性文件中的值创建 AspectJExpressionPointcut。
您将 DefaultPointcutAdvisor（使用切入点和拦截器配置）注册为 bean。

另请参阅 and my GitHub sample repository，我刚刚为您更新了它，以便包括阅读来自 application.properties 的切入点。

当 AspectJ ExpressionPointcutAdvisor 以编程方式创建时不会触发切入点

Point cut is not triggered when AspectJExpressionPointcutAdvisor create programatically

spring

spring-aop

spring-boot

spring-aspects